Tubing head



Nov. 7, 1939. A. J. PENICK'ET AL 2,178,700

TUBING HEAD Filed Jan. 24, 1938 Patented Nov. 7, 1939 UNITED STATES TUBING HEAD Arthur J. Penick and Kirby T. Penick, Houston, Tex.

Application January 24, 1938, Serial No.-185,626

4 Claims.

This invention relates to a tubing head.

An object of the invention is to provide a tubing head for suspending a tubing in a well and embodying means whereby the tubing may be rotated to control the choke valve at the lower end of the tubing. In the production of oil the lower end of the tubing is often equipped with a choke valve which may be controlled by manipulating the tubing. It is one of the objects of this invention to provide means for conveniently rotating the tubing to manipulate said valve while maintaining a seal between the tubing and the head proper to prevent the escape of the well fluid.

It is another object. of the invention to provide in a tubing head, a novel type of tubing hanger mounted in the head in a novel manner so that the hanger and tubing may be rotated. v with the above and other objects in view the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawing, wherein: The figure shows a side elevation of the tubin head partly in section. Referring now more particularly to the drawing,the numeral I designates a head attached to the upper endof a casing 2. The head has an inside downwardly tapering seat 3 and beneath the seat has the outflow lines 4, .4. which may be controlled by the conventional valves provided for the purpose. On the seat 3 there is a metal bushing 5 shaped to conform to the shape of the seat 3 and having external annular packing rings 6 countersunk therein to form a seal with the seat 8. Above the packing rings the bushing has an annular external V-groove I and extending radially through the upper end flange 8 of the head I there are the retaining bolts 3 whose inner ends have threaded connections with thehead and beyond said connections have the inner tapering ends Ill which engage with the sloping underside of the groove 1 to secure the bushing in place. The outer ends of the bolts 3 are shaped to receive a wrench whereby they may be screwed inwardly into active position as shown or outwardly to clear the bushing to permit its removal or insertion. The bolts are surrounded by packing II retained in place by the gland I2.

The bushing 5 has an inside counter-bore forming the inside annular shoulder I3 near its lower end. 'Fitted through the bushing 5 there is the tubular hanger I4 to the lower end of which the 55 tubing I5 is connected. The hanger hasan external annular rib I5a and above and beneath said rib are the annular bearing assemblies I6, H, the latter of which is supported on the shoulder l3 and the former of'which is supported by said rib.

Within-the counter-bore of the bushingand surrounding the hanger and supported on the upper antifriction bearing assembly I6 there is the packing I3 which is clampedin place by the gland I3. This gland is secured to the bushing by the clamp bolts 20. Efiective sealing means is thus provided between the hanger and the bushing.

0n the head I there is a housing 2| having the external lower end flange 22 and the flanges 8 and 22 are secured together by suitable clamp bolts 23 with a conventional gasket 24 between them. The upper end of the housing is inwardly thickened so as to closely surround the hanger. I4 and the inwardly thickened portion is counterbored from beneath to receivethe annular packing 25, which closely surrounds the hanger and'.

is clamped against the inside annularshoulder 26 of the housing by means of gland 21 which is bolted to the inwardly thickened upper'end of the housing by the clamp bolts 28. Bolted on to the upper end of the housing there is a Christmas tree adapter 29 and between said adapter and housing there is a conventional gasket 30.

A chamber 3| is thus provided within the housing for the gearing hereinafter referred to.

Splined on the hanger within the chamber 3| there is a bevel gear 32 which is also secured against longitudinal" movement by a set screw 33. The housing has a laterally extended bearing 34 to receive the outwardly extended shaft 35. Keyed on the inner'end of the shaft there is a pinion 36 which is in mesh with the bevel gear 32. A nut.3'l is keyed on the inner end of the shaft abutting said pinion by the cotter key 38 and the outer end of the pinion abuts against the inside wall of the housing. A collar 33 is secured on the shaft 35 by the set screw and 'in abutting relation with the outer end of the bearing 34 whereby the shaft 35 is maintained against endwise movement.

The outer end of the shaft'35 is shaped to receive a wrench whereby said shaft and pinion may be turned to rotate the tubing hanger and tubing as may be required, while maintaining a seal between the hanger and tubinghead.

What we claim is: v

1. A tubing head for wells comprising a tubular head adapted to be connected to the top of a well casing and having an inside seat, a tubular adapted to be connected to the top of a well casing and having an inside seat, tubing suspending means in sealed engagement with said seat and including a rotatable tubing hanger, a housing on the head inclosing a chamber and through which the hanger extends, means forming a seal between the hanger and housing, a gear on the hanger within said chamber, a pinion in the chamber in mesh with said gear and means for rotating the pinion to rotate the hanger and tubing.

3. In combination a tubular head adapted to be connected to a pipe in a well and having an inside seat, a tubular bushing on said seat, a tubular hanger extended through and rotatable in the bushing and adapted to be coupled to a well tubing, a support in the bushing, antifriction means for mounting the hanger in the bushing and mounted on said support, sealing means between the bushing and head, sealing means between the bushing and hanger, a housing on the head through which the hanger extends and containing a chamber, sealing means between the hanger and housing, means within the chamber connected with the hanger for rotating the same, and accessible means for driving said rotating means.

4. A tubing head for wells comprising a tubular head adapted to be connected to a pipe in a well and having an inside seat, tubing suspending means in sealed engagement with said seat and including a rotatable tubing hanger, a housing on the head through which the hanger extends and in sealed engagement with the hanger, gearing inclosed by the housing, means accessible outside of the head for driving the gearing and operatively connected with the hanger by means of said gearing whereby the hanger and tubing may be rotated.

ARTHUR J. PENICK. KIRBY T. PENICK. 

